255304520 has 64 divisors (see below), whose sum is σ = 614692800. Its totient is φ = 95143680.

The previous prime is 255304513. The next prime is 255304541. The reversal of 255304520 is 25403552.

It is a self number, because there is not a number n which added to its sum of digits gives 255304520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43607 + ... + 49113.

It is an arithmetic number, because the mean of its divisors is an integer number (9604575).

Almost surely, 2^255304520 is an apocalyptic number.

255304520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255304520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307346400).

255304520 is an abundant number, since it is smaller than the sum of its proper divisors (359388280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255304520 is a wasteful number, since it uses less digits than its factorization.

255304520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5598 (or 5594 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 255304520 is about 15978.2514687934. The cubic root of 255304520 is about 634.3848963326.

The spelling of 255304520 in words is "two hundred fifty-five million, three hundred four thousand, five hundred twenty".